In the July/August 2008 issue of ACM Queue we published part one of a two-part discussion about the practice of software engineering. The goal was to gain some perspective on the tools, techniques, and methodologies that software engineers use in their daily lives. Three members of Queue’s editorial advisory board participated: Steve Bourne, Eric Allman, and Bryan Cantrill, each of whom has made significant and lasting real-world contributions to the field (for more information on each of the participants, see part one). In part two we rejoin their conversation as they discuss XP (Extreme Programming) and Agile.